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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 1 to 2 of 2 (0.103 seconds)

Spelling suggestions: "subject:"chiroptischen hafteigenschaften"" "subject:"chiroptischen sensoreigenschaften""

1

Pseudo-helicale und helicale Primärstrukturen aus spiroanellierten vier- und fünfgliedrigen Ringen: Synthesen und chiroptische Eigenschaften / Pseudo-helicale and helicale primary structures of spiroannulated four- and five- membered rings: Syntheses und chiroptical properties

Widjaja, Tien 03 November 2005 (has links)
No description available.
540 Chemie
Mathematics and Computer Science
Spiroverbindungen
Primärstrukturen
helicale Kohlenwasserstoffe
Konformation
chiroptische Eigenschaften
spiro compounds
primary structures
helical hydrocarbons
conformation
chiroptical properties
35.69
2

Helical Bilayer Nonbenzenoid Nanographene Bearing a [10]Helicene with Two Embedded Heptagons

Yang, Lin, Ju, Yang-Yang, Medel, Miguel A., Fu, Yubin, Komber, Hartmut, Dmitrieva, Evgenia, Zhang, Jin-Jiang, Obermann, Sebastian, Campaña, Araceli G., Ma, Ji, Feng, Xinliang 22 April 2024 (has links)
The precision synthesis of helical bilayer nanographenes (NGs) with new topology is of substantial interest because of their exotic physicochemical properties. However, helical bilayer NGs bearing non-hexagonal rings remain synthetically challenging. Here we present the efficient synthesis of the first helical bilayer nonbenzenoid nanographene (HBNG1) from a tailor-made azulene-embedded precursor, which contains a novel [10]helicene backbone with two embedded heptagons. Single-crystal X-ray analysis reveals its highly twisted bilayer geometry with a record small interlayer distance of 3.2 Å among the reported helical bilayer NGs. Notably, the close interlayer distance between the two layers offers intramolecular through-space conjugation as revealed by in situ spectroelectrochemistry studies together with DFT simulations. Furthermore, the chiroptical properties of the P/M enantiomers of HBNG1 are also evaluated by circular dichroism and circularly polarized luminescence.
info:eu-repo/classification/ddc/540
ddc:540

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